﻿using System;

namespace _0422_2
{
    class Program
    {
        static void Main(string[] args)
        {
            Specialty s = new Specialty("java", "王雷", 17, "专科");
            s.Intro();
            Undergraduate u = new Undergraduate("网络技术", "刘文", 22, "本科");
            u.Intro();

        }
    }
}
